Using Gazebo for simulating AUV

This documentation is still incomplete.

Pre download models to avoid runtime latency

fix color of dae mesh using blender

Preserving environment variables for roslaunch

From this question's comment thread

Ah. Got it. The problem was that I was assuming my_model corresponded to the model name in the model.config file. Instead, as you probably know, it refers to the folder that the model resides in.

world file should name the folder in which the model.config is, not the model itself.